216180264 has 32 divisors (see below), whose sum is σ = 553021920. Its totient is φ = 70383936.

The previous prime is 216180259. The next prime is 216180277. The reversal of 216180264 is 462081612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103707 + ... + 105770.

It is an arithmetic number, because the mean of its divisors is an integer number (17281935).

Almost surely, 2^216180264 is an apocalyptic number.

216180264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

216180264 is an abundant number, since it is smaller than the sum of its proper divisors (336841656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216180264 is a wasteful number, since it uses less digits than its factorization.

216180264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209529 (or 209525 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 216180264 is about 14703.0698835311. The cubic root of 216180264 is about 600.1668647004.

The spelling of 216180264 in words is "two hundred sixteen million, one hundred eighty thousand, two hundred sixty-four".